Offer Crawford, Wallace and Bass for Chris Bosh. 
Settle for Crawford, Hump and Bass for Chris Bosh.
But seriously, hasnt' there been rumors for a while that Miami can't afford all 3 of those guys and might look to trade Bosh for depth?
What realistically would it take to get Bosh?
We don't need Bosh at this stage in his career unless we can win now, and we can't.
Assuming the cHeat are willing to move Bosh (and i think that's a big assumption) we would need a 3rd team involved to give us some young assets/picks and who wants to compete NOW.
Houston is one such team that comes to mind. How's Howard/Bosh//Harden for a big three?
Houston gets Bosh and Cole.
cHeat get Hump, Bass and Crawford
Cs get Asik/Lynn and 2-3 of these 4: Smith, Jones, Parsons, Montejunas and/ or picks.
Any other teams out there that Bosh would elevate to contender status and has young assets/picks that woul interest us? Suns, Chicago, Cavs?